A technician is preparing to replace the batteries in a rack-mounted UPS system.

Comprehensive and Detailed Explanation From Exact Extract:

UPS batteries are heavy and often located at the bottom of racks to maintain balance. Safe removal requires the use of correct lifting techniques to avoid injury. OSHA and workplace safety standards emphasize ergonomic handling when dealing with heavy equipment.

A. Fire suppression readiness is important for fire safety but not specifically relevant to battery removal.

C. Antistatic bags are for electronic components, not heavy battery modules.

D. A face mask is not generally necessary unless there is a chemical leak, which is not indicated here.